46 
4. Comantheria iveberi A. H. Clark. 
A. H. Clark. Froc. Biol. Soc. Washington, vol. 25, 1912, p. 22. 
Stat. 49a. S°23'.5S., ii9°4'.6E. 69 Metres, i Ex. 
The centrodorsal is discoidal, moderately thick, the flat dorsal pole 4 mm. in diameter. 
The cirri are XXXII, 19 — 20 (usually the latter) about 20 mm. long; the fifth and sixth 
or si.xth and seventh segments are the longest, about half again as long as broad ; the seventh 
or eighth (usually the latter) is a transition segment, strongly marked, with a dark band ; the 
outer segments are nearly or quite twice as broad as long; the distal dorsal edge of the 
segments following the transition segment slowly becomes more and more prominent, forming 
a serrate transverse ridge which on the outer segments becomes subterminal, remaining as a 
narrow serrate ridge, which may be more or less elevated in the centre; on about the fifth 
segment following the transition segment a small low tubercle appears midway between this 
ridge and the proximal end of the segments which on the outer segments becomes pointed, so 
that in lateral view the dorsal profile of the segments is bidentate, as in Oligometrides adeonae\ 
the longer proximal segments are slightly constricted centrally with prominent ends; proximal 
to the transition segment the cirri are brownish yellow, beyond white and highly polished. 
There are exactly forty arms 95 mm. long, all grooved; all the IIBr series are 4 (3 + 4), 
all the IIIBr series 2 ; there is no further division. The division series are moderately broad, 
well rounded dorsally, moderately separated. The dorsal interradial perisome carries small 
scattered inconspicuous plates. 
The brachials are moderately overlapping. Syzygies occur between the third and fourth 
brachials, again between the ii'*^ and 12'^ (more rarely 12"' and i3''>) and i6''» and 1 7''^ (less 
commonly 17"^ and i8"i>), and distally at intervals of three oblique muscular articulations. 
The mouth is submarginal and interradial. 
Comantheria toeberi is very closely related to C. intermedia of southern Japan from 
which it differs in having somewhat stouter cirri with fewer segments of which the longest are 
half again as long as broad instead of only slightly longer than broad. 
Comanthina A. H. Clark. 
I. Comanthina schlegelii (P. H. Carpenter). 
P. H. CARPENTER. Notes from the Leyden Museum, vol. 3, \%Z\, ^. 2\o [Actinonielra sclilegelii). 
Journ. Linn. Soc. (Zool.), vol. 16, 18S2, p. 521 [Actinometra sp.; Banda). 
Bell. "Alert" Report, 1884, p. 169 {Actinometra niultifida, part). 
P. H. Carpenter "Challenger" Reports. Stalked Crinoids, 1884, p. wo {Actinometra dissiinilis). 
VON Graff. "Challenger" Reports. Myzostoma, 1887, p. 13 {Actinometra nobilis). 
P. H. Carpenter. "Challenger" Reports. Comatulae, 1888, p. 335, pi. 64, fig. 3 {Actinometra 
duplex); p. 336, pi. 65 {Actinometra nobilis); p. 347, pi. 68 {Actinometra regalis). 
HamaNN. Jenaische Zeitschr., vol. 23, 1889, p. 234 {Actinometra nobilis). 
Cuenot. Archiv.es de biol., vol. 11, 1891, p. 315 {Actinometra nobilis). 
H.\RTLAL;e. Nova Acta der Leop. -Carol, deutschen Akad. der Naturforsch., vol. 58, 1891, 
N" I, p. 96 {Actinometra parvicirra, part); p. 99 {Actinometra regalis). 
